流量管理 – 数据面 – 端到端请求处理流程 以 Bookinfo 为例说明服务间 HTTP 调用的流量拦截及处理流程： 1. Productpage 发起对 reviews 服务的调用：http://reviews:9080/reviews/0 。 2. 请求被 productpage Pod 的 iptables 出向流量规则拦截，处理后重定向到本地 15001 端口。 3. Envoy 在 15001 9080 route 进行分发。 6. 9080 这个 route 的配置中，host name 为 reviews:9080 的请求对应 的 cluster 为 outbound|9080||reviews.default.svc.cluster.local。 7. outbound|9080||reviews.default.svc.cluster.local cluster 配置为通过EDS获取对应的Endpoint，通过 ，通过 EDS 查询得到该 cluster 中有3个 endpoint。 8. 请求被 Envoy 转发到其中一个 endpoint 10.40.0.15，即 reviews-v1 所在的 pod。 9. 然后该请求被 reviews-v1 pod 的 iptables 入向流量规则拦截，处理后重定向到本地的 15006 端口。 10.Envoy 在 15006 端口上监听的 VirtualInbound

#IstioCon Bookinfo architecture without service mesh ● Reviews-v1 ○ doesn’t call the ratings service. ● Reviews-v2 ○ calls ratings, black stars ● Reviews-v3 ○ calls ratings, red stars Initializing services services 1) Deploy bookinfo services with istio sidecar without reviews-v2 2) Deploy bookinfo gateway 3) Deploy reviews-v2 service without istio sidecar （ kubectl label namespace default istio-inje Initializing services 1) Deploy bookinfo services with istio sidecar without reviews-v2 2) Deploy bookinfo gateway 3) Deploy reviews-v2 service without istio sidecar （ kubectl label namespace default ist

to thank the following people who provided valuable subject matter expertise, contributions, and reviews:  Michelle Casagni  Tom Fugate  Ann Chavtur  Raj Agrawal  Julia Taylor  Pete methods most often involve extensive analysis, planning, and documentation, as well as large-scale reviews and milestones that ensure readiness to begin development of highly complex and tightly integrated they are staffed, organized, and managed, as well as whether the business processes, governance reviews, and funding models that support an acquisition are structured to support Agile. To succeed

应用程序由这些微服务组成： productpage 微服务调用 details 和 reviews 微服务来产生页面信息。 details 微服务包括了书的信息。 review 微服务包括了书的评论。它同时还会调用 ratings 微服务。 ratings微服务包括了带有对本书的评论信息的评分信息。 reviews 微服务有三个版本： 版本 v1 不调用 ratings 服务。 版本 v2 中的应用程序及其健康状况。 3. 把鼠标放到 Health 图标上可以查看额外的健康状况详情。 4. 点 reviews Service 来查看应用程序的详情。 5. 在 Applications Details 页中，可以查看更详细的健康状况信息，并进一步了解有关 reviews Service 的三个版本的信息。 6. 在 Application Details 页面中，还可以点相关 及 它们的其他信息，比如健康状况。 3. 把鼠标移到任何一个服务的健康图标来查看该服务的健康状况信息。当一个服务在线并可以无错 误地响应请求时，它被视为处于健康状态的服务。 4. 点 Reviews Service 查看它的详细信息。请注意，这个服务有三个不同的版本。 5. 在 Services Details 页面中，您可以查看与该服务关联的工作流、虚拟服务和目的规则概述。 6. 在

calls the details and reviews microservices to populate the page. details. The details microservice contains book informa�on. reviews. The reviews microservice contains book reviews. It also calls the ra�ngs with manual sidecar injec�on, run: $ for service in productpage-service productpage-v1 details-v1 reviews-v1; curl -s https://raw.githubusercontent.com/cilium/cilium/v1.5/example istioctl kube-inject created deployment.extensions/details-v1 created service/reviews created ciliumnetworkpolicy.cilium.io/reviews-v1 created deployment.extensions/reviews-v1 created Check the progress of the deployment (every

calls the details and reviews microservices to populate the page. details. The details microservice contains book information. reviews. The reviews microservice contains book reviews. It also calls the ratings with manual sidecar injection, run: for service in productpage-service productpage-v1 details-v1 reviews-v1; do kubectl apply -f https://raw.githubusercontent.com/cilium/cilium/v1.6 Check the progress 1/1 1 1 12s productpage-v1 1/1 1 1 13s reviews-v1 1/1 1 1 12s Create an Istio ingress gateway for the productpage

应用程序由这些微服务组成： productpage 微服务调用 details 和 reviews 微服务来产生页面信息。 details 微服务包括了书的信息。 review 微服务包括了书的评论。它同时还会调用 ratings 微服务。 ratings微服务包括了带有对本书的评论信息的评分信息。 reviews 微服务有三个版本： 版本 v1 不调用 ratings 服务。 版本 v2 apps/ratings-v1 created service/reviews created serviceaccount/bookinfo-reviews created deployment.apps/reviews-v1 created deployment.apps/reviews-v2 created deployment.apps/reviews-v3 created service/productpage yaml destinationrule.networking.istio.io/productpage created destinationrule.networking.istio.io/reviews created destinationrule.networking.istio.io/ratings created destinationrule.networking.istio.io/details

calls the details and reviews microservices to populate the page. details. The details microservice contains book information. reviews. The reviews microservice contains book reviews. It also calls the ratings with manual sidecar injection, run: for service in productpage-service productpage-v1 details-v1 reviews-v1; do kubectl apply -f https://raw.githubusercontent.com/cilium/cilium/v1.7 Check the progress 1/1 1 1 12s productpage-v1 1/1 1 1 13s reviews-v1 1/1 1 1 12s Create an Istio ingress gateway for the productpage

applications o Replace comprehensive Preliminary Design Reviews (PDRs) and Critical Design Reviews (CDRs) with more frequent and incremental design reviews during the release planning phases. To demonstrate the program’s progress, these reviews should focus on the relatively small scope of a release and how it aligns to the enterprise architecture. Similar technical reviews can be decomposed to the release ivory towers) While Agile systems engineering involves frequent informal technical and programmatic reviews, this less formal approach does not equate to less rigor. Instead, greater frequency allows key